<template xmlns:el-col="http://www.w3.org/1999/html">
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区-->
    <el-card>
      <!--搜素与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!--用户列表区域-->
      <el-table
        :data="userList"
        border
        stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮-->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户对话框-->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>
    <!--修改用户对话框-->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名" >
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>

<!--分配角色对话框-->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
       @close="setRoleDialogClosed">
      <p>当前的用户:{{userInfo.username}}</p>
      <p>当前的角色:{{userInfo.role_name}}</p>
      <p>分配新的角色:
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option
            v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id">
          </el-option>
        </el-select>
      </p>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>

</template>

<script>
  export default {
    name: "Users.vue",
    data() {
      // 验证邮箱的规则
      var checkEmail = (rule,value,cb)=>{
        // 验证邮箱正则表达式
        const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
        if(regEmail.test(value)){
          return cb()
        } else{
          cb(new Error('请输入合法的邮箱'))
        }

      }
      // 验证手机号的校验规则
      var checkMobile = (rule,value,cb)=>{
        // 验证手机号的正则表达式
        const regMobile =  /^[1][3,4,5,7,8][0-9]{9}$/
        if(regMobile.test(value)){
          return cb()
        } else{
          cb(new Error('请输入合法的手机号'))
        }
      }

      return {
        // 获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前每页显示多少条数据
          pagesize: 2
        },
        userList: [],
        total: 0,
        // 控制添加用户对话框的显示和隐藏
        addDialogVisible:false,
        // 需要被分配角色的用户信息
        userInfo:{},
        // 添加用户的表单数据
        addForm:{
          username:'',
          password:'',
          email:'',
          mobile:''
        },
        // 添加表单的验证规则对象
        addFormRules:{
          username:[
            {required:true,message:'请输入用户名',trigger:'blur'},
            {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger: 'blur'}],
          password:[
            {required:true,message:'请输入密码',trigger:'blur'},
            {min:6,max:10,message:'用户名的长度在6~10个字符之间',trigger: 'blur'}],
          email:[
            {required:true,message:'请输入邮箱',trigger:'blur'},
            {validator:checkEmail,trigger:'blur'}],
          mobile:[
            {required:true,message:'请输入手机号',trigger:'blur'},
            {validator:checkMobile,trigger:'blur'}],
        },
        // 控制修改用户对话框的显示与隐藏
        editDialogVisible:false,
        // 查询到的用户信息对象
        editForm:{},
        // 修改表单的验证对象
        editFormRules:{
          email:[
            {required:true,message:'请输入用户邮箱',trigger:'blur'},
            {validator:checkEmail,trigger: 'blur'}
            ],
          mobile:[
            {required:true,message:'请输入用户手机号',trigger:'blur'},
            {validator:checkMobile,trigger: 'blur'}
          ]
        },
        // 控制分配角色对话框的显示与隐藏
        setRoleDialogVisible:false,
        // 所有角色的数据列表
        rolesList:[],
        // 已选中的ID值
        selectedRoleId:''
      }
    },
    created() {
      this.getUserList();
    }, methods: {
      async getUserList() {
        const {data: res} = await this.$http.get('users', {params: this.queryInfo})
        if (200 !== res.meta.status) {
          this.$message.error('获取用户列表失败!')
        } else {
          this.userList = res.data.users;
          this.total = res.data.total;
        }
      },
      // 监听pagesize改变的事件
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize;
        // 刷新页面-重新请求数据
        this.getUserList();
      },
      // 监听页码值改变的事件
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        // 刷新页面-重新请求数据
        this.getUserList();
      },
      // 监听switch开关的状态改变
      async userStateChanged(userInfo) {
        const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        if (200 !== res.meta.status) {
          // 因为用户状态更新失败-应恢复原来状态
          userInfo.mg_state = !userInfo.mg_state
          return this.$message.error('更新用户状态失败！')
        } else {
          this.$message.success('更新用户状态成功!')
        }
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed(){
        this.$refs.addFormRef.resetFields();
      },
      // 点击按钮添加新用户
      addUser(){
        this.$refs.addFormRef.validate(async valid=>{
          if (!valid){
            return
          } else{
            // 发起添加用户请求
          const {data:res} = await this.$http.post('users',this.addForm)
            if (201!==res.meta.status){
              this.$message.error('添加用户失败！');
            } else{
              this.$message.success('添加用户成功！')
              // 隐藏添加用户的对话框
              this.addDialogVisible = false
              // 重新获取用户列表数据
              this.getUserList();
            }
          }
        })
      },
      // 展示编辑用户的对话框
     async showEditDialog(id){
       // console.log(id);
      const {data:res} = await this.$http.get('users/'+id)
       if (200!==res.meta.status){
        return this.$message.error('查询用户信息失败！')
       }else {
         this.editForm = res.data
       }
       this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed(){
        this.$refs.editFormRef.resetFields();
      },
      // 修改用户信息并提交
      editUserInfo(){
        this.$refs.editFormRef.validate(async valid=>{
          if (!valid){
            return
          } else{
            // 发起修改用户信息的数据请求
          const {data:res} = await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
            if (200!==res.meta.status){
              return  this.$message.error('更新用户信息失败!')
            } else {
              // 关闭对话框
              this.editDialogVisible = false;
              // 刷新数据列表
              this.getUserList()
              // 提示修改成功test
              this.$message.success('更新用户信息成功！')
            }
          }
        })
      },
      // 更加ID删除对应的用户信息
      async removeUserById(id){
        // 弹框询问用户是否删除数据
        const confirmResult =  await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error =>{
          return error
        })
        // 如果用户确认删除,则返回值为字符串confirm
        // 如果用户取消删除,则返回值为字符串cancel
        // console.log(confirmResult);
        if ('confirm'!==confirmResult){
          return this.$message.info('已经取消删除！')
        }
       const {data:res} = await this.$http.delete('users/'+id)
        if (200!==res.meta.status){
          return this.$message.error('删除用户失败！')
        } else{
          this.$message.success('删除用户成功！')
          this.getUserList()
        }
      },
      // 展示分配角色对话框
      async setRole(userInfo){
        this.userInfo = userInfo
        // 在展示对话框之前，获取所有的角色列表
        const {data:res} = await this.$http.get(`roles`)
        if (200!==res.meta.status) {
          return this.$message.error('获取角色列表失败!')
        } else{
          this.rolesList = res.data
        }
        this.setRoleDialogVisible = true

      },
      // 点击按钮分配角色
      async saveRoleInfo(){
        if (!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色!')
        } else{
           const {data:res} =  await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
          if (200!==res.meta.status){
            return this.$message.error('更新角色失败！')
          } else{
            this.$message.success('更新角色成功!')
            this.getUserList()
            this.setRoleDialogVisible = false
          }
        }
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed(){
        this.selectedRoleId = ''
        this.userInfo = {}
      }
    }
  }
</script>

<style scoped>

</style>
